CN114112392A - Bearing load determination method, device, equipment and storage medium - Google Patents
Bearing load determination method, device, equipment and storage medium Download PDFInfo
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- CN114112392A CN114112392A CN202111409586.3A CN202111409586A CN114112392A CN 114112392 A CN114112392 A CN 114112392A CN 202111409586 A CN202111409586 A CN 202111409586A CN 114112392 A CN114112392 A CN 114112392A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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Abstract
The embodiment of the invention discloses a method, a device, equipment and a storage medium for determining bearing load. The method comprises the following steps: determining the vertical compression amount of each bearing in a bearing state respectively corresponding to the target engine according to the vertical support stiffness of each bearing in the target engine and the total weight of the moving part in the target engine, which has a connection relation with each bearing; acquiring a first lifting load value and a second lifting load value of a target bearing obtained through two lifting tests, wherein the first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, and the second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount; performing linear fitting on the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value to determine a critical load value when the lifting amount is zero; and determining a target load value of the target bearing according to the critical load value. The technical scheme of the embodiment of the invention ensures more accurate bearing load and ensures accurate installation process.
Description
Technical Field
The embodiment of the invention relates to the technical field of computers, in particular to a bearing load determining method, a bearing load determining device, bearing load determining equipment and a storage medium.
Background
Engines can provide power and are an important component of many devices. The engine usually comprises a plurality of bearings, and in the installation process of an engine shafting, the leveling and centering of the shafting are required to be ensured, and generally, the load of each bearing is ensured to be consistent with the design.
The installation process of the engine shafting is usually complex, and especially for some large generators needing to be installed in large equipment, such as marine low-speed machines, due to the fact that the large generators are large in size and high in weight, the load of each bearing is difficult to accurately measure in the actual installation operation process, and difficulty is brought to accurate installation. Therefore, a solution for accurately determining the axle load is needed.
Disclosure of Invention
The embodiment of the invention provides a bearing load determination method, a bearing load determination device, bearing load determination equipment and a storage medium, and can optimize the existing bearing load determination scheme.
In a first aspect, an embodiment of the present invention provides a method for determining a bearing load, including:
determining the vertical compression amount of each bearing in a bearing state respectively corresponding to the target engine according to the vertical support stiffness of each bearing in the target engine and the total weight of a moving part in the target engine, which has a connection relation with each bearing;
acquiring a first lifting load value and a second lifting load value of a target bearing obtained through two lifting tests, wherein the first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, the second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount, and the first multiple is different from the second multiple;
performing linear fitting on the basis of the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value, and determining a critical load value when the lifting amount is zero according to a fitting result;
and determining a target load value of the target bearing according to the critical load value.
In a second aspect, an embodiment of the present invention provides a bearing load determining device, including:
the compression amount determining module is used for determining the vertical compression amount of each bearing in a bearing state respectively corresponding to the target engine according to the vertical supporting rigidity of each bearing in the target engine and the total weight of the moving part in the target engine, which has a connection relation with each bearing;
the device comprises a lifting load value acquisition module, a first lifting load value acquisition module and a second lifting load value acquisition module, wherein the first lifting load value and the second lifting load value are obtained by a target bearing through two lifting tests, the first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, the second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount, and the first multiple is different from the second multiple;
the critical load determining module is used for performing linear fitting on the basis of the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value, and determining a critical load value when the lifting amount is zero according to a fitting result;
and the target load determining module is used for determining a target load value of the target bearing according to the critical load value.
In a third aspect, an embodiment of the present invention provides a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the computer program to implement the bearing load determination method according to the embodiment of the present invention.
In a fourth aspect, embodiments of the present invention provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements a bearing load determination method as provided by embodiments of the present invention.
According to the bearing load determining scheme provided by the embodiment of the invention, the vertical compression amount of each bearing in a bearing state corresponding to each bearing is determined according to the vertical supporting rigidity of each bearing in a target engine and the total weight of a moving part in the target engine, which has a connection relation with each bearing; acquiring a first lifting load value and a second lifting load value of a target bearing obtained through two lifting tests, performing linear fitting based on the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value, and determining a critical load value when the lifting amount is zero according to a fitting result; and determining a target load value of the target bearing according to the critical load value. By adopting the technical scheme, the determined bearing load can be accurate and reliable, and the technical effect of accurately performing the shafting installation process is ensured.
Drawings
Fig. 1 is a schematic flow chart of a method for determining bearing load according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating an installation of a bearing housing according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of another method for determining bearing load according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of another bearing load determination method provided by an embodiment of the present invention;
fig. 5 is a block diagram of a bearing load determining apparatus according to an embodiment of the present invention;
fig. 6 is a block diagram of a computer device according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the steps as a sequential process, many of the steps can be performed in parallel, concurrently or simultaneously. In addition, the order of the steps may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Example one
Fig. 1 is a schematic flow chart of a method for determining a load of a bearing according to an embodiment of the present invention, which may be applied to a case of determining a load of a bearing in an engine, and the method may be performed by a bearing load determining apparatus, where the apparatus may be implemented by software and/or hardware, and may be generally integrated in a computer device. As shown in fig. 1, the method includes:
In the embodiment of the present invention, the target engine may be any engine having a bearing connection, and is not particularly limited. Alternatively, the target engine is used to power large equipment including at least one of a large ship, a large aircraft, and a large vehicle, for example, a large ship with a full displacement of 10 ten-thousand tons or more.
For example, the target engine includes a plurality of bearings, and each of the bearings may include all of the bearings in the target engine, or may include a portion of the bearings, such as all of the main bearings.
Illustratively, stiffness refers to the ability of a material or structure to resist elastic deformation when subjected to a force, and is indicative of the ease with which the material or structure can be elastically deformed. The vertical support stiffness may be understood as a measure of the ability of the bearing to resist elastic deformation when subjected to a force in the vertical direction. Optionally, the vertical support stiffness of each bearing may be obtained by a static experiment or a finite element calculation method.
For example, the moving component in a coupled relationship with each bearing may include a movable component in the target engine in a coupled relationship, directly or indirectly, with each bearing. For example, the moving component may include a crank mechanism in the engine, the crank mechanism may include a piston assembly, a connecting rod assembly and a crankshaft assembly, the piston assembly, the connecting rod assembly and the crankshaft assembly are connected to each other for movement, for example, the piston reciprocates to drive the crankshaft to rotate, and other components, such as a crosshead, may also be included. Alternatively, the weight of each moving part may be measured separately and the total weight calculated.
For example, after obtaining the vertical support stiffness and the total weight of each bearing, the vertical compression of each bearing in the loaded state can be calculated. The vertical compression is understood to be the amount of deformation in the vertical direction that occurs when the bearing is subjected to a force in the loaded state.
102, obtaining a first lifting load value and a second lifting load value of the target bearing obtained through two lifting tests, wherein the first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, the second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount, and the first multiple is different from the second multiple.
In the embodiment of the present invention, the target bearing may be any one of the bearings. The lifting test may be to lift the load bearing corresponding to the bearing by a preset lifting tool, for example, the crankshaft at the position of the bearing may be lifted by a hydraulic lifting method. Specifically, the obtaining of the first lifting load value and the second lifting load value through the lifting test may be that the lifting is performed twice through a preset jacking tool and the load value is obtained through the preset jacking tool, if the load value is read from the hydraulic jacking tool, the lifting amount of the first lifting test is a first lifting amount, and the second lifting amount of the second lifting test is a second lifting amount. The lifting amount can be understood as a displacement of a load bearing corresponding to the target bearing in a vertical direction under the action of a preset jacking tool, and can be obtained by measuring a distance between related reference objects, for example, a gap between a journal and a bearing bush, or a gap between a crankshaft crank pin and a bearing hole, and a specific measurement mode is not limited, for example, measurement can be performed by a feeler gauge, and the like.
In the embodiment of the invention, the lifting amount in the lifting test is determined according to the vertical compression amount, wherein the first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, the second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount, and the first multiple and the second multiple are different. Optionally, the second lifting amount may be an integer multiple of the first lifting amount, and for example, the second lifting amount may be 2 times the first lifting amount. The first multiple and the second multiple may be set according to actual requirements, the value of the vertical compression amount is generally smaller, and for the convenience of measuring the lifting amount, the multiple may be set to be larger, for example, the first multiple is 100, the second multiple is 200, and the like.
And 103, performing linear fitting on the basis of the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value, and determining a critical load value when the lifting amount is zero according to a fitting result.
In this embodiment, the critical load value may be understood as a load amount corresponding to a critical point where the bearing is to be separated from the bearing bush during the preset lifting process of the jacking tool. That is, at the critical load value, the bearing and the bearing shell are about to separate, but are not yet separated, and the lifting amount is zero. Further, when the jacking tool is preset to lift the load, a linear transformation process can be assumed, a fitting result is obtained through linear fitting of the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value obtained through the steps, and the critical load value when the lifting amount is zero is determined according to the fitting result.
And 104, determining a target load value of the target bearing according to the critical load value.
In this embodiment, after the critical load value of the target bearing when the lift amount is zero is obtained, the target load value of the target bearing may be determined according to the critical load value. For example, the critical load value is directly determined as the target load value; or, under the condition of considering the vertical support rigidity of the bearing, the influence quantity of the estimated vertical compression quantity on the bearing load value is subtracted on the basis of the target load value, so that a more accurate target load value is obtained.
According to the bearing load determining method provided by the embodiment of the invention, the vertical compression amount of each bearing in a bearing state corresponding to each bearing is determined according to the vertical supporting rigidity of each bearing in a target engine and the total weight of a moving part in the target engine, which has a connection relation with each bearing; acquiring a first lifting load value and a second lifting load value of a target bearing obtained through two lifting tests, wherein the first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, the second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount, and the first multiple is different from the second multiple; based on the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value, linear fitting is carried out, and the critical load value when the lifting amount is zero is determined according to a fitting result.
Example two
Fig. 3 is a schematic flow chart of another method for determining a bearing load according to an embodiment of the present invention, which is optimized based on the above-mentioned alternative embodiments, specifically, the method includes the following steps:
step S201, determining the vertical compression amount of each bearing in the bearing state respectively corresponding to the target engine according to the vertical support stiffness of each bearing in the target engine and the total weight of the moving parts in the target engine, which have connection relation with each bearing.
Step S202, a first lifting load value and a second lifting load value of the target bearing obtained through two lifting tests are obtained, wherein the first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, the second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount, and the first multiple is different from the second multiple.
In the process of carrying out a lifting test, a preset lifting tool is adopted to respectively lift a first position on a first crank arm and a second position on a second crank arm which are positioned at two sides of the target bearing to obtain a first load value and a second load value, and a corresponding lifting load value is determined according to the first load value and the second load value, wherein the lifting amount is the distance between a journal and a bearing bush which correspond to the target bearing.
Exemplary, noteVertical compression amount of Deltal0The first lift is Deltal1The second lift amount is Deltal2。Δl1Is Deltal0Delta times, Δ l of2Is Deltal1K may be 2, e.g., a first multiple of 100 and a second multiple of 200.
In this embodiment, when a preset jacking tool is used for lifting, referring to fig. 2 of the present invention, an installation diagram of a bearing seat may be shown, where 1 is a main bearing cover connecting bolt, 2 is a main bearing cover, 3 is a crankpin, 4 is a crank arm, 5 is a main bearing shell, and 6 is a main bearing seat, a first lifting point on a first crank arm and a second lifting point on a second crank arm, which are located at two sides of the crankpin in fig. 2, are selected to be lifted respectively, and the first lifting point and the second lifting point are located at intermediate positions on the first crank arm and the second crank arm as shown in fig. 2, where the first lifting point is located on a small triangle on the first crank arm at a side a in fig. 2, and the second lifting point is located on a small triangle on the second crank arm at a side B in fig. 2, and the first lifting point and the second lifting point may be two symmetrical positions, that is, that the first position and the second position are symmetrically distributed with respect to a target bearing, and thus configured, the lifting load value can be conveniently and accurately calculated subsequently. Optionally, when each position is lifted, each position is lifted separately in the embodiment of the present invention, and the lifting is completed to record the load value of each lifting of each position. Specifically, the lift amount is a distance between a journal and a bearing shell corresponding to the target bearing, for example, a distance between a main bearing shell 5 and a main bearing seat 6 in fig. 2, and for example, a gap between a crank pin of a crankshaft and a bearing hole may be measured as the lift amount by a feeler gauge.
And 203, performing linear fitting on the basis of the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value, and determining a critical load value when the lifting amount is zero according to a fitting result.
Illustratively, the critical load value may be obtained by a calculation of linear interpolation. Specifically, in the embodiment, a first load value and a second load value obtained by respectively lifting a first position on a first crank arm and a second position on a second crank arm on two sides of a bearing during a first lifting test can be obtained, and the first lifting load value is determined according to an average value of the first load value and the second load value; and when a second lifting test is obtained, respectively lifting a first position on the first crank arm and a second position on the second crank arm at two sides of the bearing to obtain a first load value and a second load value, determining a second lifting load value according to the average value of the first load value and the second load value, and then determining a critical load value according to the obtained first lifting load value and the second lifting load value in a linear interpolation calculation mode.
For example, the critical load value may be determined by the following expression:
wherein, F0In order to be the critical load value,
a first load value corresponding to a first lift amount on the A side of the first lift test,
A second load value corresponding to the first lift amount on the B side of the first lift test,
A first load value corresponding to a second lift amount on the A side of the second lift test,
And the second load value corresponds to the second lifting amount of the side B of the second lifting test. The first lift load value may be expressed as
The first lift load value may be expressed as
And S204, determining the compressive load increment of the target bearing in the bearing state according to the product of the vertical support rigidity of the target bearing and the vertical compression amount in the bearing state.
In this embodiment, the target bearing vertical support stiffness obtained according to the above embodiment and the target bearing vertical compression amount in the bearing state are multiplied to obtain the compression load increment of the target bearing in the bearing state.
And S205, determining a target load value of the target bearing according to the difference value between the critical load value and a compression load increment, wherein the compression load increment is a load increment value corresponding to the vertical compression amount.
In this embodiment, the obtained critical load value of the target bearing and the compressive load increment corresponding to the vertical compression amount of the target bearing in the load bearing state when the lifting amount is zero are calculated, the difference between the critical load value and the compressive load increment is calculated, and the target load value of the target bearing is determined according to the difference between the critical load value and the compressive load increment. The target load value may be determined by the following expression:
the specific calculation formula is as follows:
Fbearing-n＝F0-knΔl0
wherein, Fbearing-nIs a target load value, F0Is a critical load value, knFor the vertical support stiffness of the current bearing,. DELTA.l0Is the vertical compression.
According to the bearing load determining method provided by the embodiment of the invention, the compressive load increment of the target bearing in the bearing state is determined according to the product of the vertical support rigidity of the target bearing and the vertical compression amount in the bearing state. The target load value can be accurately determined through the critical load value and the compression load increment in the bearing state, so that the determined bearing load is accurate and reliable, and the shafting installation process used by large-scale equipment such as marine shafting and the like is accurately carried out.
EXAMPLE III
Fig. 4 is a schematic flow chart of another method for determining a bearing load according to an embodiment of the present invention, specifically, the method includes the following steps:
s301, calculating a rigidity accumulated value of vertical supporting rigidity of each bearing in the target engine; and determining the vertical compression amount of each bearing in a bearing state corresponding to each bearing according to the quotient of the total weight of the moving part in the target engine, which is in connection with each bearing, and the accumulated rigidity value.
In the embodiment of the invention, the vertical supporting stiffness of each main bearing is obtained by methods such as static experiments or finite element calculation, the vertical supporting stiffness of each main bearing is added to obtain the accumulated stiffness value of the vertical supporting stiffness of each bearing, then the quotient of the total weight of the moving parts in the target engine, which are connected with each bearing, and the accumulated stiffness value is calculated, and the finally obtained quotient is determined as the vertical compression amount of each bearing in the corresponding bearing state. The amount of vertical compression can be determined by the following expression:
wherein,. DELTA.l0G is the total weight of the moving part in connection with each bearing, k is the vertical compression amount1、k2…knThe vertical support stiffness of each bearing.
Step S302, a first lifting load value and a second lifting load value of the target bearing obtained through two lifting tests are obtained, wherein the first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, the second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount, and the first multiple is different from the second multiple.
Illustratively, the first lift amount is Δ l1The second lift amount is Deltal2。Δl1Is Deltal0Delta times, Δ l of1＝δ×Δl0，Δl2＝2×Δl1。
And 303, performing linear fitting on the basis of the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value, and determining a critical load value when the lifting amount is zero according to a fitting result.
In this embodiment, the vertical compression amount may be a compression amount of the bearing in a vertical bearing state when the bearing is not lifted; when the bearing is in the first lifting test, the vertical variation can be the sum of the first lifting amount and the vertical compression amount. Illustratively, the increment of the compression load of the bearing in a vertical loading state is determined according to the product of the first lifting load value corresponding to the first lifting amount and the second ratio.
And S305, determining a target load value of the target bearing according to the difference value between the critical load value and a compression load increment, wherein the compression load increment is a load increment value corresponding to the vertical compression amount.
In this embodiment, the target load value of the target bearing is determined according to the critical load value of the target bearing and the compressive load increment corresponding to the vertical compressive quantity of the target bearing in the load-bearing state, where the obtained lifting amount is zero. The target load value may be determined by the following expression:
wherein, FbearingIs a target load value, F0In order to be the critical load value,
a first load value corresponding to a first lift amount on the A side of the first lift test,
A second load value corresponding to the first lift amount on the B side of the first lift test,
Delta is a first multiple for the first lift load value.
According to the bearing load determining method provided by the embodiment of the invention, based on the assumption that the first ratio and the second ratio of the compression load increment and the first lifting load value are equal, the compression load increment is estimated, the target load value of the target bearing is determined according to the difference value of the critical load value and the compression load increment, the target load value can be accurately determined through the critical load value and the compression load increment in a bearing state, the determined bearing load is accurate and reliable, and the accurate implementation of the shafting installation process used by large-scale equipment such as marine shafting and the like is ensured.
Example four
Fig. 5 is a block diagram of a bearing load determining apparatus according to an embodiment of the present invention, where the apparatus may be implemented by software and/or hardware, and may be generally integrated in a computer device, and may perform bearing load determination by executing a bearing load determining method. As shown in fig. 5, the apparatus includes:
a compression amount determining module 401, configured to determine, according to vertical support stiffness of each bearing in a target engine and a total weight of a moving component in the target engine, where the moving component is connected to the bearing, vertical compression amounts of the bearings in a bearing state respectively corresponding to the bearings;
a lifting load value obtaining module 402, configured to obtain a first lifting load value and a second lifting load value obtained by performing two lifting tests on a target bearing, where a first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, a second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount, and the first multiple is different from the second multiple;
a critical load determining module 403, configured to perform linear fitting based on the first lifting amount, the first lifting load value, the second lifting amount, and the second lifting load value, and determine a critical load value when the lifting amount is zero according to a fitting result;
a target load determination module 404, configured to determine a target load value of the target bearing according to the critical load value.
The bearing load determining module provided by the embodiment of the invention can execute the bearing load determining method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects for executing the method.
Further, the target load determining module is specifically configured to: and determining a target load value of the target bearing according to the difference value between the critical load value and a compression load increment, wherein the compression load increment is a load increment corresponding to the vertical compression amount.
In the above embodiment, the compression amount determining module 401 is specifically configured to:
calculating the accumulated value of the vertical supporting rigidity of each bearing in the target engine; and determining the vertical compression amount of each bearing in a bearing state respectively corresponding to each bearing according to the quotient of the total weight of the moving part in the target engine, which is in connection with each bearing, and the accumulated value of the rigidity. The method comprises the steps of obtaining the vertical supporting stiffness of each main bearing through a static experiment or a finite element calculation method, adding the vertical supporting stiffness of each main bearing to obtain the stiffness accumulated value of the vertical supporting stiffness of each bearing, then calculating the quotient of the total weight of moving parts in a target engine, which are connected with each bearing, and the stiffness accumulated value, and determining the finally obtained quotient as the vertical compression amount of each bearing in a bearing state corresponding to each bearing.
In some embodiments, the apparatus may further comprise:
a compression load increment determining module, configured to determine a compression load increment according to a product of a vertical support stiffness of the target bearing and the vertical compression amount before determining a target load value of the target bearing according to the critical load value; or before the target load value of the target bearing is determined according to the critical load value, estimating the compressive load increment based on an assumption that a first ratio and a second ratio of the compressive load increment and the first lifting load value are equal, wherein the second ratio is a ratio of the vertical compression amount to a vertical variation amount, and the vertical variation amount is the sum of the first lifting amount and the vertical compression amount.
Further, in the process of carrying out a lifting test, a preset lifting tool is adopted to respectively lift a first position on a first crank arm and a second position on a second crank arm which are positioned at two sides of the target bearing to obtain a first load value and a second load value, and a corresponding lifting load value is determined according to the first load value and the second load value, wherein the lifting amount is the distance between a journal and a bearing bush which correspond to the target bearing.
Further, the first position and the second position are symmetrically distributed relative to the target bearing, and the lifting load value is an average value of the corresponding first load value and the second load value.
Further, the target engine is used to power large equipment including at least one of a large ship, a large aircraft, and a large vehicle.
The bearing load determining device provided by the embodiment of the invention can execute the bearing load determining method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects for executing the method. For technical details not elaborated in the above embodiments, reference may be made to the bearing load determination method provided in any of the embodiments of the invention.
EXAMPLE five
The embodiment of the invention provides computer equipment, and the bearing load determining device provided by the embodiment of the invention can be integrated in the computer equipment. Fig. 6 is a block diagram of a computer device according to an embodiment of the present invention. The computer device 500 may include: a memory 501, a processor 502 and a computer program stored on the memory 501 and executable on the processor, the processor 502 when executing the computer program implementing the bearing load determination method according to an embodiment of the present invention.
The computer equipment provided by the embodiment of the invention can execute the bearing load determination method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects for executing the method. For technical details not elaborated in the above embodiments, reference may be made to the bearing load determination method provided in any of the embodiments of the invention.
EXAMPLE six
Embodiments of the present invention also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method of bearing load determination, the method comprising:
determining the vertical compression amount of each bearing in a bearing state respectively corresponding to the target engine according to the vertical support stiffness of each bearing in the target engine and the total weight of a moving part in the target engine, which has a connection relation with each bearing;
acquiring a first lifting load value and a second lifting load value of a target bearing obtained through two lifting tests, wherein the first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, the second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount, and the first multiple is different from the second multiple;
performing linear fitting on the basis of the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value, and determining a critical load value when the lifting amount is zero according to a fitting result;
and determining a target load value of the target bearing according to the critical load value.
Storage medium-any of various types of memory devices or storage devices. The term "storage medium" is intended to include: mounting media such as CD-ROM, floppy disk, or tape devices; computer system memory or random access memory such as DRAM, DDRRAM, SRAM, EDORAM, Lanbas (Rambus) RAM, etc.; non-volatile memory such as flash memory, magnetic media (e.g., hard disk or optical storage); registers or other similar types of memory elements, etc. The storage medium may also include other types of memory or combinations thereof. In addition, the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system connected to the first computer system through a network (such as the internet). The second computer system may provide program instructions to the first computer for execution. The term "storage medium" may include two or more storage media that may reside in different locations, such as in different computer systems that are connected by a network. The storage medium may store program instructions (e.g., embodied as a computer program) that are executable by one or more processors.
Of course, the storage medium containing the computer-executable instructions provided by the embodiments of the present invention is not limited to the bearing load determination operation described above, and may also perform related operations in the bearing load determination method provided by any embodiments of the present invention.
The bearing load determining device, the equipment and the storage medium provided in the above embodiments can execute the bearing load determining method provided in any embodiment of the present invention, and have corresponding functional modules and beneficial effects for executing the method. For technical details not elaborated in the above embodiments, reference may be made to the bearing load determination method provided in any of the embodiments of the invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method of determining bearing load, the method comprising:
determining the vertical compression amount of each bearing in a bearing state respectively corresponding to the target engine according to the vertical support stiffness of each bearing in the target engine and the total weight of a moving part in the target engine, which has a connection relation with each bearing;
acquiring a first lifting load value and a second lifting load value of a target bearing obtained through two lifting tests, wherein the first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, the second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount, and the first multiple is different from the second multiple;
performing linear fitting on the basis of the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value, and determining a critical load value when the lifting amount is zero according to a fitting result;
and determining a target load value of the target bearing according to the critical load value.
2. The method of claim 1, wherein said determining a target load value for the target bearing from the critical load value comprises:
and determining a target load value of the target bearing according to the difference value between the critical load value and a compression load increment, wherein the compression load increment is a load increment corresponding to the vertical compression amount.
3. The method of claim 2, further comprising, prior to said determining a target load value for the target bearing from the critical load value:
determining the compressive load increment according to the product of the vertical support stiffness of the target bearing and the vertical compression amount;
or estimating the compressive load increment based on the assumption that a first ratio and a second ratio of the compressive load increment and the first lifting load value are equal, wherein the second ratio is the ratio of the vertical compression amount to the vertical variation amount, and the vertical variation amount is the sum of the first lifting amount and the vertical compression amount.
4. The method according to claim 2, wherein in the process of performing the lifting test, a preset lifting tool is used for respectively lifting a first position on a first crank arm and a second position on a second crank arm which are positioned on two sides of the target bearing to obtain a first load value and a second load value, and a corresponding lifting load value is determined according to the first load value and the second load value, wherein the lifting amount is the distance between a journal and a bearing shell corresponding to the target bearing.
5. The method of claim 4, wherein the first and second positions are symmetrically distributed with respect to the target bearing, and the lift load value is an average of the corresponding first and second load values.
6. The method according to claim 1, wherein the determining, according to the vertical support stiffness of each bearing in the target engine and the total weight of the moving part in the target engine, which is in connection with each bearing, the vertical compression amount of each bearing in a load-bearing state comprises:
calculating the accumulated value of the vertical supporting rigidity of each bearing in the target engine;
and determining the vertical compression amount of each bearing in a bearing state corresponding to each bearing according to the quotient of the total weight of the moving part in the target engine, which is in connection with each bearing, and the accumulated rigidity value.
7. The method of any one of claims 1-6, wherein the target engine is used to power large equipment, the large equipment including at least one of a large ship, a large aircraft, and a large vehicle.
8. A bearing load determining device, comprising:
the compression amount determining module is used for determining the vertical compression amount of each bearing in a bearing state respectively corresponding to the target engine according to the vertical supporting rigidity of each bearing in the target engine and the total weight of the moving part in the target engine, which has a connection relation with each bearing;
the device comprises a lifting load value acquisition module, a first lifting load value acquisition module and a second lifting load value acquisition module, wherein the first lifting load value and the second lifting load value are obtained by a target bearing through two lifting tests, the first lifting amount corresponding to the first lifting test is a first multiple of the vertical compression amount, the second lifting amount corresponding to the second lifting test is a second multiple of the vertical compression amount, and the first multiple is different from the second multiple;
the critical load determining module is used for performing linear fitting on the basis of the first lifting amount, the first lifting load value, the second lifting amount and the second lifting load value, and determining a critical load value when the lifting amount is zero according to a fitting result;
and the target load determining module is used for determining a target load value of the target bearing according to the critical load value.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1-7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
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